Abstract: A cooler toner, comprising a binder resin and a colorant, wherein the colorant comprises organic pigment particles treated with an isocyanic ester or a silicon-containing compound.

Abstract: A color toner for developing electrostatic images including a resin component and a colorant, said resin component comprising a THF (tetrahydrofuran)-soluble and containing substantially no toluene-insoluble; wherein the THF-soluble provides a molecular weight distribution in the GPC (gel permeation chromatography) thereof such that there are a peak (Mp1) in the molecular weight range of 500 to 2,000, and a peak (Mp2) in the molecular weight range of 10,000 to 100,000; the weight-average molecular weight (Mw) is 10,000 to 80,000, the number-average molecular weight (Mn) is 1,500 to 8,000, and the rate of Mw/Mn.gtoreq.3.

Abstract: A toner is provided which is prepared by suspension polymerization of polymerizable monomer composition containing a chromatic dye or a chromatic pigment of which radical-active sites to inhibit the polymerization have been inactivated in the previously conducted bulk polymerization. The toner has superior developing characteristics and an anti-blocking property as well as superior color tone and excellent chroma.

Abstract: A color toner for developing electrostatic images including a resin component and a colorant, said resin component comprising a THF (tetrahydrofuran)-soluble and containing substantially no toluene-insoluble; wherein the THF-soluble provides a molecular weight distribution in the GPC (gel permeation chromatography) thereof such that there are a peak (Mp1) in the molecular weight range of 500 to 2,000, and a peak (Mp2) in the molecular weight range of 10,000 to 100,000; the weight-average molecular weight (Mw) is 10,000 to 80,000, the number-average molecular weight (Mn) is 1,500 to 8,000, and the rate of Mw/Mn.gtoreq.3.

Abstract: A color toner, comprising a binder resin and a colorant, wherein the colorant comprises organic pigment particles treated with an isocyanic ester or a silicon-containing compound.

Abstract: Toner for developing electrostatic latent images is produced by dispersing an anionic inorganic dispersant in an aqueous medium; generating cationic inorganic particles in the aqueous medium which are hard to dissolve in water so as to produce a dispersant medium of the anionic inorganic dispersant and the cationic inorganic particles; dispersing a monomer composition including at least polymerizable monomer and a cationic material into the dispersant medium and generate particles of the monomer composition; and suspension-polymerizing the monomer composition particles and produce toner.